A- Alamosa, Arvada, Aspen, Ault, Aurora, Avon
B- Bailey, Basalt, Bayfield, Berthoud, Boulder, Breckenridge, Brighton, Broomfield, Brush, Buena Vista, Burlington
C- Calhan, Canon City, Carbondale, Castle Rock, Cedaredge, Clifton, Colorado Springs, Commerce City, Conifer, Cortez, Craig, Crested Butte
D- Dacono, Delta, Denver, Dillon, Dove Creek, Durango
E- Eads, Eagle, Eaton, Elizabeth, Englewood, Erie, Estes Park, Evans, Evergreen
F- Fairplay, Firestone, Fort Collins, Fort Lupton, Fort Morgan, Fountain, Fraser, Frisco, Fruita
G- Georgetown, Gilcrest, Glenwood Springs, Grand Junction, Grand Lake, Greeley, Gunnison, Gypsum
H- Hayden
I- Idaho Springs, Ignacio
J- Johnstown
K- Kersey, Kiowa
L- La Junta, Lafayette, Lake City, Lakewood, Lamar, Laporte, Larkspur, Leadville, Limon, Littleton, Longmont, Louisville, Loveland, Lyons
M- Mancos, Manitou Springs, Meeker, Monte Vista, Montrose, Monument, Morrison
N- Nederland, New Castle, Norwood
O- Oak Creek, Olathe
P- Pagosa Springs, Palisade, Paonia, Parachute, Parker, Peyton, Pine, Platteville, Poncha Springs, Pueblo
R- Rangely, Rifle, Rocky Ford
S- Salida, San Luis, Sedalia, Severance, Silverthorne, Silverton, Snowmass Village, Steamboat Springs, Sterling, Strasburg
T- Telluride, Thornton, Trinidad
U- U S A F Academy
V- Vail
W- Walden, Walsenburg, Wellington, Westcliffe, Westminster, Wheat Ridge, Windsor, Winter Park, Woodland Park, Wray
Y- Yuma